# LetPeopleWork - Lighthouse and Sizing Poker

> LetPeopleWork GmbH builds tools for delivery teams: Lighthouse, the open-source flow metrics and forecasting tool, and Sizing Poker, a free browser tool for sizing a backlog without estimating it. Founded by Peter Zylka-Greger and Benjamin Huser-Berta in Switzerland, we help organizations stop guessing about delivery and start making decisions grounded in real data.

## About LetPeopleWork

**What does LetPeopleWork do?**
LetPeopleWork helps delivery teams answer two questions: why is delivery slow, and when will it be done? We do this with tools: Lighthouse for flow metrics and probabilistic forecasting, and Sizing Poker for sizing a backlog without estimates. Teams move from gut-feel estimates to data-backed forecasts they can bring to steering committees with confidence.

**What makes LetPeopleWork unique?**
We build the tools we recommend. Our founders have 15+ years of hands-on experience, have trained over 500 professionals, and are active practitioners — not theorists. Lighthouse is used by teams worldwide and is trusted by enterprise organizations and small teams alike.

**Who are the founders?**
- Peter Zylka-Greger: Expert in Flow, Kanban, and organizational transformation. Trains teams and leaders in data-driven delivery.
- Benjamin Huser-Berta: Software Engineer and Scrum Master. Core maintainer of Lighthouse, focused on reducing waste and building value-focused work environments.

## Core Pages

- [Homepage](https://letpeople.work/): Overview of the LetPeopleWork tools, Lighthouse and Sizing Poker, and the company mission
- [Lighthouse Product Page](https://letpeople.work/lighthouse/): Full details on Lighthouse features, pricing, downloads, and AI integration
- [Sizing Poker](https://letpeople.work/sizing-poker/): Free browser tool that sizes a backlog by asking one question per item instead of estimating it
- [AI at LetPeopleWork](https://letpeople.work/ai/): obAIa, open-source Claude Code plugins, and the AI workshop journey
- [Delivery Predictability Assessment](https://letpeople.work/assessment/): Free five-minute self-assessment of how predictable your delivery is

## Sizing Poker - Backlog Sizing Without Estimates

**What is Sizing Poker?**
A free tool at https://letpeople.work/sizing-poker/ for sizing a backlog without story points or estimates. You set the number of days an item should normally be done in (this is the team's Service Level Expectation), then see one work item at a time and answer a single question: could we finish this within that time? Three answers: Yes (pull it when there is room), Maybe (something has to be arranged first, name it), No (too big, split it). A round of ten items takes minutes. It runs entirely in the browser; nothing is uploaded and no signup is needed. A walkthrough with an example backlog explains each step and what to discuss after each answer.

**Who is it for?**
Product Owners, Scrum Masters and teams doing backlog refinement who want to replace estimation with a fast fit-or-not decision, and teams using Lighthouse who want to right-size their work against their Service Level Expectation.

## Lighthouse - Flow Metrics & Forecasting Tool

**What is Lighthouse?**
Lighthouse is an open-source flow metrics and probabilistic forecasting tool. It connects to your ALM system (Jira, Azure DevOps, Linear, or ServiceNow), visualizes how work flows through your teams, and generates Monte Carlo-based delivery forecasts grounded in your actual throughput history. It runs entirely on your own infrastructure — no cloud dependency, no data leaving your environment.

**Key features of Lighthouse:**
1. Visualize flow metrics: throughput, cycle time, work item age, work in progress
2. Generate realistic delivery forecasts using Monte Carlo simulations and historical data
3. Connect to Jira, Azure DevOps, Linear, and ServiceNow
4. Track both team-level and portfolio/project-level metrics
5. AI integration via MCP (Model Context Protocol) — let your AI assistant query Lighthouse data directly
6. CLI integration for use in shell scripts, CI/CD pipelines, and automated workflows
7. 100% open-source and self-hosted
8. Community Edition is free forever; paid tiers unlock unlimited usage (see licensing below)
9. Predictability trends: Percentiles Over Time and Process Behaviour Charts (PBC) Over Time show whether your delivery is becoming more or less predictable
10. Blocked work tracking: rule-based blocked definition, blocked duration per item, and a Blocked Over Time chart for teams and portfolios
11. Kubernetes support: official public Helm chart for the Server edition, with optional OIDC login and horizontal scaling

**What is AI integration in Lighthouse?**
Lighthouse exposes your flow data to AI assistants through three integration methods:
1. **CLI** (`@letpeoplework/lighthouse-cli`): Run Lighthouse queries from the terminal, shell scripts, or CI/CD pipelines. Outputs JSON for easy downstream use.
2. **MCP stdio** (`@letpeoplework/lighthouse-mcp-stdio`): Run a local MCP server over stdio. Works with Claude Desktop, VS Code, JetBrains, and any MCP-compatible client.
3. **MCP HTTP** (`@letpeoplework/lighthouse-mcp-http`): Run a persistent MCP server over HTTP. Ideal for shared team setups or self-hosted AI environments.

With AI integration, you can ask natural-language questions like:
- "Which teams should I focus on this week?" — get a prioritized view of where cycle time is spiking, WIP is creeping, or predictability is dropping
- "Will we finish the Q3 release by August?" — run a Monte Carlo forecast in seconds
- "What's one thing this team could do to improve their flow?" — get coaching recommendations based on actual metrics

AI integration is available as a downloadable skill for compatible clients and works with any tool-calling AI (Claude, GitHub Copilot, and others).

**Downloadable AI integration packages:**
- Skill bundle (.zip): https://github.com/LetPeopleWork/lighthouse-clients/releases/latest/download/lighthouse-skill.zip
- MCP bundle (.mcpb): https://github.com/LetPeopleWork/lighthouse-clients/releases/latest/download/lighthouse-mcp-stdio.mcpb
- Full setup guide: https://docs.lighthouse.letpeople.work/aiintegration.html

**What are Lighthouse's licensing options?**
Three editions, same product, different access. All editions are open source and self-hosted; if you ever stop paying, your data and the tool stay with you.
- Community Edition: Free forever. All core flow metrics and Monte Carlo forecasts, up to 3 teams, 1 portfolio, 1 delivery.
- Self-Service: CHF 2,000/year. Unlimited teams, portfolios, and deliveries, all paid features, community Slack support. One flat rate, no per-seat pricing.
- Enterprise: CHF 10,000/year. Everything in Self-Service plus prioritised support, 24h acknowledgement on async requests, onboarding calls, and named contacts.

**How long does it take to set up Lighthouse?**
Under ten minutes from download to first forecast. In a recorded live session, Scrum Master Gabor Bittera started a ten minute timer, downloaded Lighthouse, connected his Jira instance with an API token, added his team, and forecast the team's next ten work items, finishing with 1:25 left on the clock. The demo is on https://letpeople.work/lighthouse#first-forecast. Guided onboarding is also available free of charge for every edition.

**How do I install Lighthouse?**
Available for:
- Windows: Installer (.exe, .msi) — code signed
- macOS: Disk image (.dmg) and App Bundle (.zip) — signed and notarized
- Linux: AppImage and server binaries (.zip)
- Docker: `ghcr.io/letpeoplework/lighthouse:latest`
- Kubernetes: official Helm chart, see https://docs.lighthouse.letpeople.work/Installation/kubernetes.html

Download from GitHub releases: https://github.com/LetPeopleWork/Lighthouse/releases

**What systems does Lighthouse integrate with?**
Jira, Azure DevOps, Linear, and ServiceNow (team level only). AI assistants via MCP (any tool-calling compatible AI including Claude and GitHub Copilot).

**How does Lighthouse compare to ActionableAgile and Nave?**
All three provide flow metrics (cycle time, throughput, WIP, work item age) and data-driven forecasting. The key differences:
- Lighthouse is 100% open source and self-hosted (desktop app or Docker); ActionableAgile (by 55 Degrees) and Nave are closed-source commercial SaaS.
- Lighthouse has a free-forever Community edition and flat per-organisation pricing (Self-Service CHF 2,000/year; Enterprise CHF 10,000/year). ActionableAgile is priced per user; Nave is priced per connected board.
- Lighthouse connects to Jira, Azure DevOps, Linear, and ServiceNow; ActionableAgile to Jira and Azure DevOps; Nave to Jira, Trello, and Azure DevOps.
- Lighthouse has native AI integration via MCP and CLI; that is not a core feature of the others.
- With Lighthouse your delivery data never leaves your own infrastructure.
Full, honest comparison table: https://letpeople.work/compare/

## AI at LetPeopleWork

**How does LetPeopleWork use AI?**
We run our own company with AI and call the setup obAIa: an AI-augmented "big room" where decisions get pressure-tested by three perspectives (commercial, marketing, go-to-market) and are kept with their reasoning. It holds our work, pipeline, and dates in one place and surfaces what needs attention. We teach AI the way we use it every day, not from a slide deck.

**What open-source AI plugins does LetPeopleWork provide?**
Two Claude-Code-native plugins, free and open source:
- LetPeopleWorkShop (https://github.com/LetPeopleWork/LetPeopleWorkShop): Design, prepare, and learn from workshops, all in markdown. Agents: designer, executor, feedback. Includes a facilitation-practices library (Liberating Structures, Training from the BACK of the Room). Install: `/plugin marketplace add LetPeopleWork/LetPeopleWorkShop` then `/plugin install let-people-workshop@letpeoplework`.
- LetPeopleGrow (https://github.com/LetPeopleWork/LetPeopleGrow): Prepare for, capture, and learn from 1:1s. Coaching support, never a performance dossier. Agents: prep, capture, growth, patterns. Includes a conversation-practices library (GROW, SBI, NVC, career conversations).

**What AI workshops does LetPeopleWork offer?**
A four-step AI journey for businesses. Each workshop is a private 1-day session for one organisation, on-site or remote, bookable on its own or as the full journey. Pilot price: CHF 2,500 per team (covers the entire team, not a seat), subject to change once the pilot cohorts fill up.
1. The bAsIcs (literacy): what agents, commands, and skills are, and why the chat box is not the whole of AI
2. BIYA: Build It Yourself Agent: build your first working agent hands-on
3. From Prototype to Product: build a real, working product yourself with tools like Lovable and Claude Code
4. Filling the Gap: The AI-Powered Business: run parts of your business with AI, the obAIa way
A separate "AI for Engineers" track (software engineering with agents) is coming soon.

## Assessment and Onboarding

**Is there help with getting started?**
- Free Delivery Predictability Assessment (https://letpeople.work/assessment/): a five-minute, six-question self-assessment that scores how you measure flow and how you forecast, with a concrete next step. No email required.
- Lighthouse Setup & Onboarding: free of charge, for every edition. We help you get Lighthouse running, connect Jira, Azure DevOps, Linear, or ServiceNow, and walk your team through the tool. Contact contact@letpeople.work with subject "Lighthouse onboarding".
- Self-Service trial: a 30-day license of Lighthouse Self-Service, no signup and no credit card. Request it on the Lighthouse page.

**How can I contact LetPeopleWork?**
- General inquiries: contact@letpeople.work
- Tool support: support@letpeople.work
- Premium licensing: licensing@letpeople.work
- Community Slack: https://join.slack.com/t/let-people-work/shared_invite/zt-38df4z4sy-iqJEo6S8kmIgIfsgsV0J1A

## Company Information

**Where is LetPeopleWork located?**
LetPeopleWork GmbH, Mühlackerstrasse 108, 8046 Zürich, Switzerland.

**What are LetPeopleWork's channels?**
- Website: https://letpeople.work
- LinkedIn: https://www.linkedin.com/company/let-people-work/
- GitHub: https://github.com/LetPeopleWork
- YouTube (Lighthouse Live and sessions): https://www.youtube.com/@LetPeopleWork/videos
- Meetup (community events): https://www.meetup.com/lighthouselive/
- Community Slack: https://join.slack.com/t/let-people-work/shared_invite/zt-38df4z4sy-iqJEo6S8kmIgIfsgsV0J1A
- Lighthouse Documentation: https://docs.lighthouse.letpeople.work

**What is LetPeopleWork's mission?**
To help teams stop guessing and start delivering with confidence. We believe the data to improve delivery is already in your tools — Lighthouse surfaces it, and Sizing Poker helps you act on it in refinement.

## Technical Details

**What technology stack is Lighthouse built on?**
.NET Core / C# backend, React + TypeScript frontend. SQLite for local data storage. Cross-platform (Windows, macOS, Linux, Docker).

**Is Lighthouse open source?**
Yes, 100% open source: https://github.com/LetPeopleWork/Lighthouse

**Where does Lighthouse store data?**
All data is stored locally using SQLite. Nothing is transmitted to external cloud services. You own your data.

**What is MCP?**
MCP (Model Context Protocol) is an open standard for connecting AI assistants to external data sources. Lighthouse implements MCP so that AI tools like Claude and GitHub Copilot can query your flow data directly — no copy-paste, no exports.

## Keywords & Topics

Flow metrics, kanban, delivery forecasting, Monte Carlo simulation, throughput, cycle time, work item age, work in progress, predictability, Jira integration, Azure DevOps integration, Linear integration, ServiceNow integration, AI integration, MCP, Model Context Protocol, agentic workflows, probabilistic forecasting, team performance, organizational improvement, open source tools, self-hosted solutions, Lighthouse tool, Sizing Poker, right sizing, no estimates, LetPeopleWork, obAIa, AI workshops, AI for business, Claude Code plugins, LetPeopleWorkShop, LetPeopleGrow, AI-powered business, delivery predictability assessment.

## Documentation & Resources

- [Lighthouse Docs](https://docs.lighthouse.letpeople.work): Complete guide to setup, features, and AI integration
- [GitHub Repository](https://github.com/LetPeopleWork/Lighthouse): Source code, issues, release notes
- [GitHub Releases](https://github.com/LetPeopleWork/Lighthouse/releases): Latest downloads for all platforms
- [AI Integration Guide](https://docs.lighthouse.letpeople.work/aiintegration.html): How to connect Lighthouse to Claude, Copilot, and other AI tools
- [LetPeopleWorkShop Plugin](https://github.com/LetPeopleWork/LetPeopleWorkShop): Open-source Claude Code plugin for designing and running workshops
- [LetPeopleGrow Plugin](https://github.com/LetPeopleWork/LetPeopleGrow): Open-source Claude Code plugin for 1:1s and people development